EP1363461A3 - Processing of digital images - Google Patents

Processing of digital images Download PDF

Info

Publication number
EP1363461A3
EP1363461A3 EP03009671A EP03009671A EP1363461A3 EP 1363461 A3 EP1363461 A3 EP 1363461A3 EP 03009671 A EP03009671 A EP 03009671A EP 03009671 A EP03009671 A EP 03009671A EP 1363461 A3 EP1363461 A3 EP 1363461A3
Authority
EP
European Patent Office
Prior art keywords
channel
mean
correction
processing
digital images
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03009671A
Other languages
German (de)
French (fr)
Other versions
EP1363461A2 (en
Inventor
Richard Arthur Sharman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP1363461A2 publication Critical patent/EP1363461A2/en
Publication of EP1363461A3 publication Critical patent/EP1363461A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G06T5/92—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration by the use of histogram techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6077—Colour balance, e.g. colour cast correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image

Abstract

A method of correcting a digital image comprises the steps of removing unrepresentative pixels, measuring the mean levels of the remaining pixels for each channel, determining an aim mean for each channel from the measured aim mean, determining a correction level, calculating a power law correction for each channel from the aim mean and the correction level and applying the power law correction to the input image to give a corrected output image.
EP03009671A 2002-05-18 2003-04-30 Processing of digital images Withdrawn EP1363461A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0211486.6A GB0211486D0 (en) 2002-05-18 2002-05-18 Processing of digital images
GB0211486 2002-05-18

Publications (2)

Publication Number Publication Date
EP1363461A2 EP1363461A2 (en) 2003-11-19
EP1363461A3 true EP1363461A3 (en) 2005-11-23

Family

ID=9936976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009671A Withdrawn EP1363461A3 (en) 2002-05-18 2003-04-30 Processing of digital images

Country Status (4)

Country Link
US (1) US7319544B2 (en)
EP (1) EP1363461A3 (en)
JP (1) JP2004030635A (en)
GB (1) GB0211486D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4276113B2 (en) * 2004-03-05 2009-06-10 Ｏｋｉセミコンダクタ株式会社 Standard radio wave reception time device and time code signal decoding method
US7848569B2 (en) * 2005-12-14 2010-12-07 Micron Technology, Inc. Method and apparatus providing automatic color balancing for digital imaging systems
JP5078416B2 (en) * 2006-04-27 2012-11-21 キヤノン株式会社 Reflective liquid crystal display device and substrate for reflective liquid crystal display device
KR100944595B1 (en) * 2007-04-24 2010-02-25 가부시끼가이샤 르네사스 테크놀로지 Display device, display driver, image display method, electronic apparatus and image display driver
CN103004211B (en) * 2010-04-20 2015-09-02 富士胶片株式会社 The method of imaging device and process photographic images

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571697A (en) * 1946-06-20 1951-10-16 Eastman Kodak Co Method for correcting photographic color prints
US5420704A (en) * 1992-04-06 1995-05-30 Linotype-Hell Ag Method and apparatus for the analysis of color casts in color originals
EP0843465A2 (en) * 1996-11-19 1998-05-20 Seiko Epson Corporation Image processing apparatus and image processing method
EP1014695A2 (en) * 1998-12-23 2000-06-28 Eastman Kodak Company Correction of colour balance in images

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981992A (en) * 1982-11-02 1984-05-11 Canon Inc Color image pickup device
US4729016A (en) * 1985-05-06 1988-03-01 Eastman Kodak Company Digital color image processing method and apparatus employing three color reproduction functions for adjusting both tone scale and color balance
US4677465A (en) * 1985-11-01 1987-06-30 Eastman Kodak Company Digital color image processing method with shape correction of histograms used to produce color reproduction functions
US4883360A (en) * 1987-08-13 1989-11-28 Fuji Photo Film Co., Ltd. Method and apparatus for automatically adjusting white balance
JPH0787588B2 (en) * 1987-12-29 1995-09-20 富士写真フイルム株式会社 Method and device for automatic white balance adjustment
US5436734A (en) * 1991-11-18 1995-07-25 Fuji Xerox Co., Ltd. Image-edit processing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571697A (en) * 1946-06-20 1951-10-16 Eastman Kodak Co Method for correcting photographic color prints
US5420704A (en) * 1992-04-06 1995-05-30 Linotype-Hell Ag Method and apparatus for the analysis of color casts in color originals
EP0843465A2 (en) * 1996-11-19 1998-05-20 Seiko Epson Corporation Image processing apparatus and image processing method
EP1014695A2 (en) * 1998-12-23 2000-06-28 Eastman Kodak Company Correction of colour balance in images

Also Published As

Publication number Publication date
GB0211486D0 (en) 2002-06-26
US20030214663A1 (en) 2003-11-20
EP1363461A2 (en) 2003-11-19
US7319544B2 (en) 2008-01-15
JP2004030635A (en) 2004-01-29

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